Base for a file assembly



FIG. 1 is a front elevational view of a base for a file assembly showing my new design;

FIG. 2 is a right side elevational view, the left side being a mirror image thereof;

FIG. 3 is a top plan view;

FIG. 4 is a bottom plan view;

FIG. 5 is a rear elevational view; and

FIG. 6 is a perspective view of my design on an enlarged scale. 

The ornamental design for a base for a file assembly, as shown and described. 